Add reminder about passwordless SSH (#399) #1374

Job	Run time
select-dc-files	24s
validate (./DC-SLE-HA-all ./l10n/sleha/de-de/DC-SLE-HA-all)	25s
validate (./l10n/sleha/es-es/DC-SLE-HA-all)	22s
validate (./l10n/sleha/fr-fr/DC-SLE-HA-all)	28s
validate (./l10n/sleha/it-it/DC-SLE-HA-all)	23s
validate (./l10n/sleha/ja-jp/DC-SLE-HA-all)	28s
validate (./l10n/sleha/pt-br/DC-SLE-HA-all)	21s
validate (./l10n/sleha/zh-cn/DC-SLE-HA-all)	27s
validate (./l10n/sleha/zh-tw/DC-SLE-HA-all)	21s
build-html (DC-SLE-HA-administration)	1m 23s
build-html (DC-SLE-HA-geo-clustering)	1m 10s
build-html (DC-SLE-HA-geo-clustering-guide)	1m 32s
build-html (DC-SLE-HA-installation)	1m 12s
build-html (DC-SLE-HA-nfs-storage)	55s
build-html (DC-SLE-HA-pacemaker-remote)	1m 10s
publish	38s
	11m 39s

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